Sunday 4 March 2012

Planning the flock of crows — perspective


I've started thinking about the composition of the opening shot and how the hell we're going to actually pull it off. The birds are going to be flying from right to left, towards/over the camera from a point on the horizon. The perspective is going to be a bit tricky; realistically the birds would change perspective as they drew nearer the camera but I think, for simplicity's sake, we'll simply stick with one angle and scale it up as they draw closer. They're moving fairly quickly, so hopefully it won't look weird.


I basically just took the backdrop from Jazzy's animatic and scribbled all over it to try and work out an angle for the birds that would look relatively correct no matter the distance. The angle shown above is probably the best option — it still looks reasonably plausible, even with the birds far into the distance. 

The only trouble is going to be getting them to actually fly. Flight cycles are notoriously tricky at any rate, but from such a weird angle it's probably going to be sheer horror. I've found a lot of great references of little birdies flying from all sorts of angles, so hopefully we should be able to use these and come up with something that looks pretty decent!

Again, for simplicity's sake, I think that keeping the birds completely silhouetted would be quite effective. This means we don't need to be too meticulous over the detail of the posing and wings — using a mass of solid shapes that merely suggest the idea of the pose. Plus, I think it would look quite nice against the sky...!

Low angle shots of birds in flight are surprisingly difficult to find, but a happy accident led me to stumble across this video:


It's pretty low quality but the angle is pretty much what we're going for! It's also far too quick, but fortunately I was able to download it and scrub through frame-by-frame. This allowed me to track the positions of a couple of the birds and get an idea for how we might go about the poses:


Again, horrible quality, but it serves to provide a guide as to what our poses might look like. I started thinking at this stage that the easiest option might be to create one basic body shape for each crow, and have the wings as separate layers. That way we'd be free to rotate or scale them between each keyframe — sort of like inbetweening?


Using the shadows as a reference I scribbled out some quick silhouettes to get a feel for the poses. It's almost completely eyeballed, so the proportions are totally off and I didn't particularly expect it to animate perfectly, but it should serve to give us an idea of whether it might work or not...


I drew out a rough sketch of the puppet's body shape using the first one as a reference. I tried to bear in mind the loose anatomy of the bird and made sure to give myself extra 'neck' with a rounded edge, so that we would be able to move and rotate the head!


To neaten things up I traced the outline using the pen tool and then filled the path with solid black, giving a clean edge. How lovely!


The puppet's body would remain the same — we can just pin the wings to him and rotate as needed. The head and body are separate layers and can be puppeted as well, so we could get a nice tilt of the head to counter the movement of the wings and add a little more life to the cycle.


I then just repeated the process, tracing over my wing sketches with the pen tool and filling with black on separate layers.



I definitely think we'd need more frames to ease in and out of the up and down positions, but it kind of gives you an idea as to what we'd be needing. I also just realised they're not arranged in sequence... whoops.

I very quickly slapped them together to see what they'd look like in motion:

It's not quite there yet but I think it's along the right lines. Biggest issues, I think, is the downbeat. It lacks any sort of power and just doesn't read very well at all. Needs to be far slower and hold on the down position a little longer as the rest of the wing starts to pull back up — there's no real continuity between that pose and the one before it. It just kind of jumps into this huge black mass and doesn't really 'read' at all. I think I focused a little too much on the reference and didn't really consider the motion or timing or the mechanics of the movement too much. I think if I can fix up the downbeat and sort the timing out it should look alright. It's getting there at least.

I'd also like to look at animating the body so that it bounces up and down, countering the motion of the wings. That will certainly help. Also bearing in mind that, on-screen, it will be much smaller — as was the case with my last After Effects test it should look nicer once it's actually put together and completed. Not that it's an excuse not to polish it of course!

I'm really sorry. I'm very tired, I can't really articulate myself too well at the moment. Damn birds.


I did go back and try to apply what I'd learned from the guide on Youtube about the beating of the wings, but the result wasn't too good:



I suppose it's smooth enough, but the angle isn't quite right. I was definitely closer the first time — this just doesn't make much sense given the perspective of the body. It's animated as if it's a side-on view. Again, same problems with the extremities; I need to drag the limb from the elbow and hold the positions longer and allow the rest of the wing to catch up before it changes direction.

I think if I can combine the flexibility from this version with the angle/wing shapes of the first version, I might be on to something.


Fortunately I've found a selection of far better quality references that more clearly illustrate the movement of the wings from a low angle:






Hopefully, using these, I'll be able to get a much nicer looking test done this week :]

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